The recently discovered V-based Kagome metals, \(A\) V\(_3\) Sb\(_5\)  (\(A\)  = Cs, Rb, and K), have stimulated great interest in the field of condensed matter physics [1]}, [2]}, [3]}, [4]}. These compounds, consisting ideal Kagome lattice of vanadium coordinated by antimony, show superconductivity with superconducting transition temperatures (\({\it T}_{\rm c}\) ) of 2.5, 0.92, and 0.93 K for \(A\)  = Cs, Rb, and K, respectively [4]}, [2]}, [3]}. Besides superconductivity, CDW transitions are revealed in the normal states at \({\it T}_{\rm CDW}\)  78–104 K for \(A\) V\(_3\) Sb\(_5\)  by X-ray Diffraction (XRD) and scanning tunnelling microscopy (STM) measurements [4]}, [2]}, [3]}, [11]}. The angle-resolved photoemission spectroscopy (ARPES) experiemnts point out a topological surface state with multiple Dirac nodal points close to the Fermi level, suggesting that \(A\) V\(_3\) Sb\(_5\)  can be categorized as topological Kagome metals [1]}, [4]}, [2]}.
